Whether at home, on the go or even back at work, having an extra pair of hands-free collection cups ready can make your pumping routine simpler and more efficient. Includes 4 x SkinSense silicone breast shields and 2 x shield inserts. Ultra-light collection cups, convenient at home or on the go: up to 3x lighter than fully wearable pumps; compatible with Premium, Advanced, and Hands-Free electric breast pumps. Confidence: the see-through collection cup provides an unobstructed view inside to correctly place your nipple and visualize your milk flow to track the volume of breastmilk. The collection cup is a breeze to take apart, clean by hand or a dishwasher, disinfect, and assemble. The unique SkinSense silicone breast shields are designed for ultimate comfort, softly shaping around your breasts using your body's natural warmth; they are made with food-grade silicone. Find the right fit: the range of breast shields and shield insert sizes fits 99% of moms¹ − they're available to buy separately; check your nipple size with the included sizing card or a ruler.